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Simplifying cos(3.14159x) = 4x2 + -1 Remove parenthesis around (3.14159x) cos * 3.14159x = 4x2 + -1 Reorder the terms for easier multiplication: 3.14159cos * x = 4x2 + -1 Multiply cos * x 3.14159cosx = 4x2 + -1 Reorder the terms: 3.14159cosx = -1 + 4x2 Solving 3.14159cosx = -1 + 4x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '3.14159osx'. c = -0.318310155o-1s-1x-1 + 1.27324062o-1s-1x Simplifying c = -0.318310155o-1s-1x-1 + 1.27324062o-1s-1x
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